利用瓢虫防治棉蚜的效果已为大面积生产实践所证实,是一项效果好、投资少、技术易于掌握的安全治虫措施,为群众乐于接受。目前利用瓢虫防治棉蚜主要是利用麦田、油菜田等自然发生的瓢虫,采取集中捕捉,有计划地释放到棉田的方法以达到控制棉蚜为害的目的。几年来的经验证明,只 The use of ladybugs to control cotton aphid effect has been confirmed for large-scale production practices, is a good effect, less investment, technology is easy to master the safety of pest control measures for the masses willing to accept. The current use of ladybugs to control cotton aphids is the use of wheat, rape fields and other naturally occurring ladybugs, to focus on capture, the planned release to the cotton field in order to achieve the purpose of controlling cotton aphids. Years of experience has proved that only